BIS has established eight laboratories with its Central Laboratory at Sahibabad (near Delhi) and four regional laboratories at Chennai, Kolkata, Mohali and Mumbai and three Branch laboratories at Bengaluru, Guwahati and Patna,. These laboratories cater to the needs of Certification and Standards formulation activities of BIS largely through testing of samples under product certification scheme (popularly known as the ISI marking scheme). Laboratories have facilities for testing vast variety of products in the fields of chemicals, food items, Consumer products like Domestic Gas stoves, Pressure cookers, Electric Iron, Lamps, building materials, helmets etc. Laboratories are manned by competent and trained testing personnel. The testing services are provided through well documented system established in accordance with international practices and complying to the requirements of Laboratory Quality Management System as per IS/ISO/IEC 17025. Central and Regional laboratories are accredited by the National Accreditation Board for Calibration and Testing Laboratories (NABL).
A Gold Referral Assaying Laboratory has been set up at Southern Regional Office Laboratory, Chennai for testing of Gold Jewellery.
Quality of testing is assured through regular Quality Assurance Testing programmes as well as participation in Inter laboratory Comparative and Proficiency Testing programmes.
As steps towards capacity building in the field of testing at National and International level BIS laboratories regularly provide training to participants from National and International Organizations. Expert faculties are provided for programmes conducted by training institute of BIS (NITS) which organizes training programmes on Laboratory Quality Management System as per IS/ISO/IEC/17025 for developing countries. Participants from various colleges and institutions are trained at BIS Laboratories for hand on experience in testing.